Dudley, Dean, History and Genealogy of the Bangs Family in America, Montrose, MA, D. Dudley, 1896.

Available on Ancestry.com as:

Ancestry.com. History and genealogy of the Bangs family in America : with genealogical tables and notes, tracing the descendants, male and fe [database on-line]. Provo, UT: The Generations Network, Inc., 2005.